Nut-lock.



Patented Mar. 4, 1913.

' nary bolts are used, to'prevent the nuts from UNITED sTATns PATENT oFFIoE.

JACKSON M. ROELOQF SUNNYSIDE, WASHINGTON, .ASSI'GNOR OF ONE-'HALF T0 TOEN ALEXANDER, OF SUNNYSIDE, W'ASI-INGTON.

NUT-LOCK.

spec'meation of Letters Patent.

Patented Mar. a, 1913.

Application led September 4, 1912. Serial No. 718,522.

Sunnyside, in the county ofy Yakima and State of Washington, have :inventedv new and useful Improvements in Nut-Lockaof which the following is a specification.

This Ainvention relates to nut locks and the object of the invention is to provide a 'cheaply constructed'fdevice which may be readily applied-in places where the ordicoming loose. i

A further object of the invention is the provision ofl a vdevice ofthis character' whichperm-it-s the tighteningv of the nut at all times without-touching the locking device `and-'v'vhich-permits the remo'v'al of' the nut lwhen necessary Without destroying the nut lock.

Furtherobjeets of the invention will ap pear as the'following specic description is read in connection with the accompanying drawing which formsl a part o'f this application, and in which- Figure 1 is a side elevation. Fig. 2 is a vertical sectional, View. Fig-3 is a horizontal sectional view on the line 3-3 of Fig. 1.

Referring more particularly to the drawing lrepresents a bolt having the usual bit 2 and threaded portion. 3, and 4 represents an ordina'ry nut. The threaded, portion of.

the bolt is provided with a series of longitudinal grooves one wall of which is' tangential to the bolt so as to provide a cam surface'as shown. Y'

'Ihe walls are indicated at '5 and are adapted to receive a locking device to ,be hereinafter described.y The nut is provided with a vertical slot 6 upon one side and with a horizontal slot 7 on its top. These slots are formed to receive the locking device `which consists ofy a Single piece of spring wire coiled at one end as shownat 8 toreeei've the bolt and having a radial extension 9 which is turned at right-angles'as at 10 to lie in the vertical slot 6L The upper end of the vertical portion l0 is bent back so as to lieparallel'with the portion 9 and to engage in the horizontal slot 7. This inwardlyv bent portion `which is indicated at 11 and` a :right angular portion 12 form a locking tongue 13 which is adapted to engage the grooves 5 of the bolt, the right angular portion being provided with an operating extension Ll by which the tongue may be dis- Vengaged from the grooves when it is desired to remove the nut from the bolt. It will be noticed that as the locking tongue is arranged within the slots of the nut and also in the grooves of the bolt that the nut is prevented from turning except in a direction to tighten the same upon the bolt.

What is claimed is o The combination with a bolt having a threaded portion with' longitudinal cam faced grooves 'arranged therein, a slotted nut threaded on the bolt, a sprlng washer surrounding the bolt andan angular extenlsion on the springwasher which lies in the slot of the nut andengages the grooves in the bolt.

In testimony whereof I aiiix my signature in presence of two witnesses.

, JACKSON non.

lVitnesses: Y

W. A. FUNK, CHARLES'EVETL'ER. 

